Description
Buffer overflow in the complete_emulated_mmio function in arch/x86/kvm/x86.c in the Linux kernel before 3.13.6 allows guest OS users to execute arbitrary code on the host OS by leveraging a loop that triggers an invalid memory copy affecting certain cancel_work_item data.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 3.13.6-1 | — |
| Debian 13 | linux | 3.13.6-1 | — |
| Debian 12 | linux | 3.13.6-1 | — |
References
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.13.6
- [oss-security] 20140303 CVE-2014-0049 -- Linux kernel: kvm: mmio_fragments out-of-the-bounds access mailing-list
- https://github.com/torvalds/linux/commit/a08d3b3b99efd509133946056531cdf8f3a0c09b
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a08d3b3b99efd509133946056531cdf8f3a0c09b
- https://bugzilla.redhat.com/show_bug.cgi?id=1062368